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Infer multiple assignments

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This commit is contained in:
Richard Feldman 2019-08-30 00:57:47 -04:00
parent eae1f564db
commit 2e12651858
3 changed files with 31 additions and 11 deletions
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8
src/types.rs
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@ -19,7 +19,7 @@ pub enum Type {
Erroneous(Problem),
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub enum Expected<T> {
NoExpectation(T),
ForReason(Reason, T, Region),
@ -34,7 +34,7 @@ impl<T> Expected<T> {
}
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub enum Reason {
OperatorLeftArg(Operator),
OperatorRightArg(Operator),
@ -43,7 +43,7 @@ pub enum Reason {
ElemInList,
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub enum Constraint {
Eq(Type, Expected<Type>, Region),
Lookup(Symbol, Expected<Type>, Region),
@ -52,7 +52,7 @@ pub enum Constraint {
And(Vec<Constraint>)
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub struct LetConstraint {
pub rigid_vars: Vec<Variable>,
pub flex_vars: Vec<Variable>,